Apparatus foe the



(No Model.)

E. H. PRIEDRIGHS.' y

APPARATUS-POR THB APPLICATION 0I' PAINT OR GOLORING MATERIAL TO ARTISTS ACADEMY BOARDS. No. 287,530;

Patented Oct. 30, 1883. I

N. PETERS, Phmpmagmpher. wnhnglon, D. c.

UNITED( STATES PATENT OFFICE.

ERNEST H. FRIEDRICHS, OF NEW YORK, N. 'Y.

APPARATUS FOR THE APPLICATION F PAINT 0R COLORING MATERIAL TO ARTISTS ACADEMY-BOARDS.

SPECIFICATION forming part of Letters Patent No. 287,530, dated October 30, 1883, Application med Mag/25,1883. (No model.)

fo all whom t may coi/warn:

Be` it known that I, ERNEST H. FRIED- Rions, of the city, county, and State of New York, have invented a new and useful Apparatus for the Application of Paint or Coloring Material in the Manufacture of Artists7 Academy and Mill Boards.

In previously-known processes for the preparation of academy and mill boards the paint has been applied to the binder-board either by a brush or a roller, and great difficulty has been experienced in producing a sufficiently smooth surface. This difficulty is overcome land asmooth-and even surface is economically produced by my apparatus, of which the following is afull, clear, and exact description.

In the accompanying drawings, to which reference is made, Figurel represents a plan view of my new apparatus. Fig. 2 is a vertical section of the same on the plane of the line c c, Fig. l. Fig. 3 isa face view,`and Fig. 4 a cross-section,.of the wiper used by me.

A is a table having an even, level surface of glass, steel, or marble or other substance, and quite flat, upon .which the process is carried out. Preferably a slab, S, of glass islet into a depression formed in the top of this table.

B is a three-sided rectangular frame, which may be attached to the table by a hinge at b.

Fig. 2 shows thesame table with the frame,

with a sheet, D, of binder-board between the frame andthe table in position for the application of the coloring material.

E is a scraper or wiper having acontinuous blunt edge and with one side slightly con-y vex, and of a suitable width to allow of its passing freely between the sides d and e of the frame B.

To prepare the academy or mill boards, a sheet of ordinary binder-board somewhat larger than the frame B is placed upon the table, and the frame is brought down evenly upon it, as in Fig. 2, and is held'irmly in position either by its own weight or by any suitablev fastening. It will be seen that the mill-board is held quite iiat on the table. A suitable amount of paint or coloring material is then distributed uporr the end of the sheet which is nearest the cross-bar f. For the ordinary sheet-eighteen and one-half inches by twenty-four'and one-half inches-I ordinarily put on about one-half pound of paint for the rst coat. vI then place the wiper upon the sheet at the closed end of the frame in a vertical position, edge downward, with the convex side toward the open end of the frame, and move it rapidly in that position,with the paint before it, over the entire surface of the sheet, between the sides of the frame, and off at the open end, where the superfluous paint not adhering to the board falls into a vessel for the purpose, the frame preventing it from flowing off at the sides. This process is repeated once or more, according to the smoothness of the nish desired and laccording to the evenness of the binder-board, an uneven or imperfect board requiring more coats than a more perfectl one. Instead of moving the wiper, the table may be moved, with the board D, un-

der a stationary continuous wiper. The frame B is then lifted, and when the sheethas dried, the edges that were under the frame B are trimmed andit is ready for delivery; or, before trimming, the sheet may be reversed and a coating given to the other side, if desired.

It will be seen that if the frame B is used to tists academy and mill boards, the combina' tion of the flat table A with the frame B, which is open at one end, and with the wiper or scraper E, for the purpose herein specified.

ERNEST H. FRIEDRICHS.

Witnesses.:

GUsTAv SOBNEPPE, JOHN C. TUNBRIDGE. 

